Water → 2,6-Bis(2-methylphenyl)-1-methyl-4-piperidone

HRID 714204ノート

反応式

HRID 714204 の反応式
[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]=[CH:9][C:10](=[O:20])[CH:11]=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=1[CH3:19].[CH3:21][NH2:22].O>CN(C)C=O>[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]1[CH2:9][C:10](=[O:20])[CH2:11][CH:12]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[CH3:19])[N:22]1[CH3:21]

参加物

5

反応物 3

HCID 962WaterHCID 6329MethylamineHCID 45639421,5-Bis(2-methylphenyl)-1,4-pentadien-3-one

生成物 1

HCID 695017532,6-Bis(2-methylphenyl)-1-methyl-4-piperidone収率 52%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

1,5-Bis(2-methylphenyl)-1, 4-pentadien-3-one (20ac, 0.50 g, 1.9 mmol) was dissolved in dimethyl formamide (10 ml). Methylamine (51, 1.0 ml, 11.6 mmol, 40% in water) was added and the mixture stirred for 24 hr at room temperature. The mixture was poured into water (50 ml) and stirred for 2 hr at room temperature. The resulting mixture was extracted into ethyl acetate, washed with saturated sodium chloride, dried over magnesium sulfate, filtered and evaporated to afford a solid. The crude solid was chromatographed on silica gel with ethyl acetate/hexane to afford a solid that was recrystallized from ethanol to give 0.29 g (52%) of a white solid: mp 155-157° C.; 1H NMR δ 1.82, (s, 3H), 2.40, (s, 6H), 2.44 (d, 2H, J=11.9 Hz), 2.77 (t, 2H, J=13.3 Hz), 3.74 (d, 2H, J=11.9 Hz), 7.16 (m, 6H), 7.67, (d, 2H, J=7.0 Hz); 13C NMR: δ 19.5, 39.9, 49.3, 65.8, 126.7, 126.9, 130.6, 134.8, 140.9, 207.2; Exact mass calcd for C20H23NO: 293.1779, observed (M+H) 294.1856.

後処理

  1. stirringstirred for 2 hr at room temperature
  2. extractionThe resulting mixture was extracted into ethyl acetate
  3. washwashed with saturated sodium chloride
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customto afford a solid
  8. customThe crude solid was chromatographed on silica gel with ethyl acetate/hexane
  9. customto afford a solid
  10. customthat was recrystallized from ethanol

出典と根拠

ORDレコード
ord-08a5630004974cfcbfab67a0fe341081
出典データセット
uspto-grants-2015_11
特許番号
US09187397B2

反応ノート

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